leapyear(a)
| 
     Group  | 
                
Returns true if the given date a is a leap year.
Description of Parameters
| 
     Parameter  | 
                
     Description  | 
        
| 
     a  | 
                
     Date.  | 
        
Examples
| 
     Parameter a  | 
                
     Result  | 
        
| 
     2005-01-05  | 
                
     false  | 
        
| 
     2008-01-05  | 
                
     true  |